The diagram below summarizes the deployment architecture for CA DataMinder integration with Sendmail or Postfix. This integration is enabled through the CA DataMinder Milter MTA agent. This agent can reside directly on the Sendmail or Postfix email server or, as in this example, on a separate Linux machine.
To enable communication between Unix or Linux machines and the CA DataMinder policy engines running on Windows servers, the Milter MTA agent uses the CA DataMinder Socket API to call the CA DataMinder External Agent. The External Agent in turn establishes a connection with a local policy engine hub. The hub then distributes the Sendmail or Postfix emails to policy engines for processing. Alternatively, the External Agent can pass e‑mails directly to a local policy engine (not shown in the diagram below).
Note: Milters are email filtering programs supported by Sendmail and Postfix. They are widely used to filter incoming emails, for example, to block spam.
Note: The External Agent API enables third party applications to pass messages to CA DataMinder for policy processing.
Sendmail and Postfix integration
In a typical Sendmail or Postfix deployment:
1 Emails sent internally transit through an Exchange or Domino server (1a), and may be processed by a CA DataMinder server agent (1b).
2 The Sendmail or Postfix MTA operates at the Internet boundary. Emails leaving the company or arriving from an external source are processed by Sendmail or Postfix. These messages are forwarded to the CA DataMinder Milter MTA agent (3).
3 Hosted on a Linux machine, the Milter MTA agent uses the Socket API (4a) to pass emails to CA DataMinder.
4 Hosted on a Windows machine, the Socket API (4a) sends Sendmail or Postfix emails to a local policy engine or hub (4b). This example shows a local hub. (When installed with the Socket API, policy engine hubs are technically known as Remote PE Connectors).
5 The hub then distributes emails to policy engines for processing. The results of any policy processing are returned via the hub to the Milter MTA agent, which in turn relays any resulting actions back to the Sendmail or Postfix server.
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